allbeee



'(No Model.) M 4 Sheets-Sheet 1. J-. B. ALLF-REE.

- FLOUR BOLT.

N0.396,851.'W W Patented Jan. 29, 1889.

(No Model.) 7 4 Sheets--Sheet 2..

J. B. ALLPREE.

FLOUR BOLT.

No. 396.851. Patented Jan. 29, 188.

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(No Model.) 4 sneefi -sheet-s.

J. B, ALLFREE; I FLOUR 'BOLT. No. 396,851. Patented Jan. 29. 1889..

UNITED STATES PATENT OEEicE.

JAMES B. ALLFREE, OF INDIANAPOLIS, INDIANA.

FLOUR-BOLT.

SPECIFICATION forming part of Letters Patent No. 396,851, dated January 29, 1889.

Application filed January 31, 1887. Serial No. 225,991. (No model.)

To all whom it may concern.-

Be it known that I, JAMEs B. ALLEEEE, of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Flour-Bolts; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like letters refer to like parts.

My invention relates to improvements in flour-bolting machines, and is especially applicable to those of the cylindrical type.

It has for its objects greater rapidity and uniformity of bolting, better-controlled regulation, and the adaptation of the reel to any variations in the temperature, character, or quantity'of material to be bolted. I attain these objects, first, by providing improved facilities for stretching the cloth evenly and tightly the full length of the reel and while the machine is in motion, thus maintaining a straight cylinder, without which it is impossible to do good work; and next, by construct ing the reel with elevating-lmckets near the inner surface of the cloth, their backs being provided with slats adjustable to and from the cloth and so arranged that they can be adjusted all at once, at either end of the reel independently of the other end, whereby the material to be bolted is confined evenly against the cloth from end to end of the reel, prevented from falling or rolling back against the bottom of the reel, and caused to be presented for bolting and distributed equally at both the up and down sides of the reel, both of these devices adding very materially to the efficiency of the machine by placing it more completely under the control of the operator as well as increasing its capacity.

In order that others may understand fully how to construct and operate my. device, I will now proceed to describe it, reference be ing had to the drawings, in which Figure 1 is an end view, one side of the easing broken away and the head of the reel removed, showing the interior arrangement of parts. Fig. 2 is a side view of one end of my device, the casing being broken away, showing the adjusting mechanism for lengthening the reel, and thereby stretching the cloth. Fig. 3 is a vertical section of the same the hopper a conveyer or chest, ch.

longitudinally through the center of the shaft and head, showing the cloth in place. Fig. 4 is an end view, and similar to Fig. 1, showing in detail the manner in which the expanding arms are connected to the reel-framc and also to the circular head. Fig. 5 is a longitudinal section of the entire reel. Figs. 3 and 4 are drawn upon an enlarged scale.

The reel is contained in a casing, B, of the usual form, having a hopper, H, and below of the reel is provided with a head securely fixed to the shaft S, supported in suitable bearings attached to the outside of the casing. I provide the other end of the reel with an adjustable head, 7L, attached to the'spider Sp, having a hub, 7L2, mounted on the shaft S and adapted to be moved longitudinally thereon. Both heads are provided at their rims with a groove or other suitable means to receive and hold securely the corded end of the cloth cl. The shaft S is provided with a slot, S, near the point where the spider sp is located, and is hollow from the slot to its outer end.

Ascrew-rod, 37', having a hole through its inner end is introduced into the hollow shaft S. The hub 71 of the spider sp is also pro vided with a hole at a point corresponding to that in the screw-rod, and apin, 3, is drawn through the hub, the slotted shaft and the screw-rod securing them together. A handwheel, hw, is screwed upon the outer end of the screw-rod, which is suitably arranged for that purpose, and against the end of the shaft S, and a lock-nut is screwed down against the hand-wheel to hold it fast. It will now be seen that when the hand-wheel 72 10 is turned against the end of the shaft the screw-rod s1 will be withdrawn, bringing forward with it, by means of the pin 3, the reel-head h, to which the cloth cl is fastened,thus stretching the cloth out of any sagging position between the hoops 1', upon which it rests, these hoops being located at convenient intervals of the length of the reel, supported upon short studs st, and bolted firmly to the buckets b, as shown in Fig. 3.

On the inside of the reel, and near its end, mounted upon the shaft S, and securely at tached thereto, is a fixed spider, 819', having arms a, and a rim, 4 provided with lugs l One end I formed thereon. Shelves or buckets b, extending nearly the entire length of the reel, are fastened at one end to the fixed head, and at the other end are attached to the fixed spiders sp in such manner as to receive the adjustable slats 81. A circular adj ustingframe, 0, is jou'rnaled and adapted to rotate upon the hub h of the fixed spider 3p, and is secured upon said hub by a set-screw, 2, whose point moves in a groove, g, in the hub. A segment-rack, s, is integrally connected with the circular frame 0, and with this rack the pinion 19 engages. This pinion is carried on the end of a counter-shaft, cs, whose inner end is secured and j ournaled in an arm of the spider 8 The counter-shaft is square, except at its inner bearing in the arm of the spider sp, andits outer end passes loosely through the hub 7L3 of the sector-lever hp, journaled in the head h and formed with a square hole, through which the counter-shaft may freely pass.

By means of the sector-lever the countershaft cs and the pinion 1) may be rotated, and

this, through the segment-rack s, will rotate the circular frame 0 upon the hub 7L, when it.

is desired to expand or contract the expand- "ing arms a, carrying the adjustable slats s]. A thumb-screw, is, working on a bolt, 4:,

which passes through the head 71, and the curved slot of the sector 0p, attached to the head 71, provides means for securing the sector-lever at any point along said slot, and thus holding the slats in any desired position. Upon the circular frame 0 are fixed wrist-pins 1, Fig. 4, and upon. these pins are mounted the expanding arms at, whose outer ends are hinged to the adjustable slats 81, which, guided by the backs of the elevating shelves or buckets b andthe lugs Z, are free to move to and fro with the expanding arms when the circular frame 0 is rotated.

It is obvious that by a small movement in one direction of the circular frame 0 upon its bearings the expanding arms a will be extended, so as to carry the slats 81 out nearer to the cloth, and a reverse movement of the frame 0 will withdraw the slats farther from the cloth, and this adjustment enables the operator to regulate the device to accommodate the quantity and quality of the material delivered to the machine. The application of the same device to the other end of the reel furnishes the means for adjusting the slats at either end, as may be desired.

The adjustment of the slats so as to bring them nearer the cloth at the discharging than at the receiving end of the reel practically makes a tapering reel, and, indeed, the adjustable mechanism may be omitted and the buck ets rigidly constructed at first, so as to be nearer the cloth at one end than at the other, and this construction is indicated in the dotted lines in Fig. 5. In either case the same result is produced-viz., the bringing of the backs of the buckets nearer the cloth at the agitation.

discharging than at the receiving end of the reel.

On the inner face of the adjustable head are provided chutes ch, one of. which is shown in the drawings, which are intended to receive the tailings of the reel and discharge them into a conveyer-box passing through an opening in the center of the head, having the exit 6.1- and containing a worm or conx'eyer, w, as shown in Fig. 5. The number of the chutes may be varied according to the needs of the work; butI-preferably use four of them, in order to effect the complete discharge of all the material carried over to this end of the reel.

I11 operation the material to be bolted is fed in at the center of the cylinder at the head end while the reel is rotating at the rate of twenty to thirty revolutions per minute, and flows between the elevating-shelves and the interior surface of the bolting-cloth. Alarge amount of the material is carried high up the sides of the reel, and then falling on the elevating-shelves is carried over without being allowed to fall through, and is pitched again st the down side of the cloth, whereon it slides down to the bottom of thereel,where it is gently carried across the vertical line without The bottom of the reel presents the meshes of the cloth in the most favorable position for the passage of the material if agitated; but as the reel moves slowly and gently it follows that but little bolting is done on the bottom, and also as the flour passes, mainly, through the meshes at the sides of the reel and nearly at the same angle it must necessarily be more even and purer thanin reels in which the bolting is done at both bottom and sides.

The adjustable slats located in the backs of the elevating-buckets may be readily set to suit the amount and character of the material going into the reel. If the charge be equal to the maximum capacity, the adjustable slats will be set at the head about an inch from the cloth and at the tail end from onefourth to one-half an inch from the cloth. Thus, as the amount of material inside the reel diminishes, the space between the elevator-buckets and the cloth becomes less and the bolting is divided between the up and down sides of the reel, increasing the boltingsurface, and of course the capacity of the machine, as well as maintaining more nearly the desired angle of the cloth at which the most perfect separation of the finer and purer from the coarser and more impure material is obtained.

It will be understood that while I have herein described the devices adopted to carry my invention into effect, they may be varied without departing from the spirit of my in- Vcntion.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is the following, to wit:

1. In a flour-bolt, the combination, with a reel, of a series of buckets extending lengthwise within it, and adjustable slats connected with their backs for increasing the height thereof, substantially as shown and described.

2. A flour-bolt comprising, incombiuation, a reel mounted upon a suitable shaft, a series of elevating-buckets within such reel, having adjustable slats connected to their backs for il'icreasing the height thereof, circular frames at each end, also mounted on the main shaft and connected through intermediate arms to such adjustable slats, a counter-shaft having bearings in the reel-head and interior spider, a pinion, a segment-rack gearing with said pinion and connected to the circular frame, and a lever mounted on the outer end of such counter-shaft for operating the slat-adj usting mechai'iisni, substantially as shown and described.

3. A flour-bolt comprising, in combination, a reel mounted upon a suit: ble shaft, and a series of adjustable buckets within it, with means, substantially as described, for setting such buckets closer to the cloth at one end of the reel than at the other.

4. In a flour-bolt, the combination of areel and shaft, spiders secured to such shaft, ele- Vating-buckets carried by the spiders, having adjustable slats secured to the backs of such buckets for increasing the radius thereof, circular frames at each end mounted on the main shaft, a segment-rack on each frame connected through intermediate arms to such adjustable slats, a counter-shaft having bearin s in the reel-head and adjacent spider, a pinion carried by such counter-shaft which engages with the segment-rack, and a lever mounted on the outer end of such countershaft for operating the slat mechanism, substantially as shown and described.

5. In a flour-bolt, the combination, with a reel, of a series of buckets extending lengthwise within it, set closer to the cloth at the discharging than at the receiving end thereof, substantially as shown and described.

In witness whereof I have hereunto set my hand this 17th day of January, 1887.

JAMES B. ALLFREE.

itnesses:

C. P. JACOBS, E. J'. RALSTON. 

